gfx/gl/SharedSurfaceIO.h

   1 /* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef SHARED_SURFACEIO_H_
   7 #define SHARED_SURFACEIO_H_
   8
   9 #include "mozilla/RefPtr.h"
  10 #include "SharedSurface.h"
  11
  12 class MacIOSurface;
  13
  14 namespace mozilla {
  15 namespace gl {
  16
  17 class Texture;
  18
  19 class SharedSurface_IOSurface final : public SharedSurface {
  20  public:
  21   const UniquePtr<Texture> mTex;
  22   const RefPtr<MacIOSurface> mIOSurf;
  23
  24   static UniquePtr<SharedSurface_IOSurface> Create(const SharedSurfaceDesc&);
  25
  26  private:
  27   SharedSurface_IOSurface(const SharedSurfaceDesc&, UniquePtr<MozFramebuffer>,
  28                           UniquePtr<Texture>, const RefPtr<MacIOSurface>&);
  29
  30  public:
  31   ~SharedSurface_IOSurface();
  32
  33   virtual void LockProdImpl() override {}
  34   virtual void UnlockProdImpl() override {}
  35
  36   virtual void ProducerAcquireImpl() override {}
  37   virtual void ProducerReleaseImpl() override;
  38
  39   virtual bool NeedsIndirectReads() const override { return true; }
  40
  41   Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor() override;
  42 };
  43
  44 class SurfaceFactory_IOSurface : public SurfaceFactory {
  45  public:
  46   const gfx::IntSize mMaxDims;
  47
  48   explicit SurfaceFactory_IOSurface(GLContext& gl);
  49
  50   virtual UniquePtr<SharedSurface> CreateSharedImpl(
  51       const SharedSurfaceDesc& desc) override {
  52     if (desc.size.width > mMaxDims.width ||
  53         desc.size.height > mMaxDims.height) {
  54       return nullptr;
  55     }
  56     return SharedSurface_IOSurface::Create(desc);
  57   }
  58 };
  59
  60 }  // namespace gl
  61
  62 } /* namespace mozilla */
  63
  64 #endif /* SHARED_SURFACEIO_H_ */